FreeNotes
The switch() statement is used to test a variable against a list of values, called cases, and execute the code corresponding to the first matching case. It is particularly useful when you have multiple conditions based on the value of a single variable. The switch statement can be more efficient and easier to read compared … Read more
A control structure in programming refers to a block of code that determines the flow of execution depending on certain conditions. These structures allow the program to make decisions, repeat code, or select among various alternatives. Control structures are classified into three main types: sequential, selection, and iteration. Selection structures are used when you need … Read more
char ch; ch = ‘c’; switch (ch) { case ‘a’: printf(“Good Morning!”); break; case ‘b’: printf(“Have a Nice Day!”); break; case ‘c’: case ‘d’: case ‘e’: printf(“Good Bye!”); break; } Output: The value of ch is ‘c’, so the program will match case ‘c’, but because there is no break statement immediately after it, the … Read more
int n, count, sum; n = 28; count = 15; sum = 30; if (n < 25) count = count + 5; printf(“Count = %d”, count); else count = count – 5; sum = sum + n; printf(“Count = %d”, count); printf(“Sum = %d”, sum); Output: The code has a mistake where the else statement … Read more
if (x > y) z = (x + y) * 3; else z = x – 5 * y; Using the conditional operator: z = (x > y) ? (x + y) * 3 : x – 5 * y; Related Questions: Differentiate between if and if-else selection structures. Differentiate between else-if and switch selection … Read more
k = (a + b > 20) ? a + 3 * b : a – b; Using if-else: if (a + b > 20) { k = a + 3 * b; } else { k = a – b; } Related Questions: Differentiate between if and if-else selection structures. Differentiate between else-if … Read more
A nested selection structure is when one control structure (like an if, else-if, or switch) is placed inside another. This allows for more complex decision-making, as the inner control structure is executed only if the outer structure’s condition is true. For example, in an if statement, another if or else-if statement can be placed within … Read more
Both else-if and switch are used to handle multiple conditions, but they differ in usage. The else-if structure is a sequence of if statements where each condition is checked one after the other, and the first condition that evaluates to true executes its corresponding block of code. It is useful when conditions are based on … Read more
The if and if-else selection structures are both used to make decisions in programming. In an if statement, a condition is evaluated, and if the condition is true, the subsequent block of code is executed. If the condition is false, no code is executed unless an alternative is explicitly provided. The if-else structure, however, provides … Read more